I've been working on these for a while and launched the range at the market last week. Just in time for summer, which hasn't really kicked in here yet... but, should be here any day now!
Anyway, weather aside, the bags are made here in Melbourne using pippijoe fabrics (hemp or hemp/cotton) on the outside and lined with 100% cotton with a very strong magnetic clasp to hold them closed. The body of the bag has extra lining so it retains its shape even when full of festive goodies!
Talking of making your own, I could draw up the pattern or put some kits in the shop if you're interested?